... circuit, new type I/O interface, LCD displayer, combined with special testing and anti-jamming technologies which greatly improve the testers’ ... can continue to work in the power off state.5. By using the RS232 port with a software upgrade or with the PC, on-line ... specially)11. Dimension: 480mm*460mm*460mm Insulating oil tester with large integrate circuit, new type I/O interface, LCD displayer